JP2008222339A - Governor tensioner device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a governor tensioner device possible to be commonly used for governor sheaves having a different diameter, and capable of easily coping with elongation of a governor rope. <P>SOLUTION: This governor tensioner device for an elevator comprises a first and a second tensioner sheaves 24 and 25 disposed in parallel with each other in the horizontal direction, a first holding member 21 for holding these tensioner sheaves freely to change an interval between them in the horizontal direction, a third tensioner sheave 31 disposed with a positional displacement in the vertical direction relative to the first and the second tensioner shaves, and a second holding member 32 for holding the third tensioner sheave 31 freely to change an interval in the vertical direction relative to the first and the second tensioner sheaves 24 and 25. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a governor tensioner device for applying tension to a governor rope of an elevator, and more specifically, improved so that it can be used in common for a plurality of governor sheaves having different diameters and can easily cope with an extension of the governor rope. The present invention relates to a governor tensioner device.

  Conventionally, an elevator has been provided with a governor (speed governor), and when the lowering speed of the car exceeds a predetermined value, the lowering of the car is braked and stopped (for example, the following patent document) 1).

The operation of this governor will be outlined with reference to FIG. 11. A main rope 3 is connected to the upper part of the car frame 2 supporting the car 1, and the car 1 is moved up and down by the operation of a hoisting machine (not shown). It is like that.
Guide shoes 4 are provided at the four corners of the car frame 2 in the upper, lower, left, and right directions, and slide up and down with a pair of left and right car side guide rails 5L and 5R to guide the raising and lowering of the car 1.

On the other hand, a governor 6 is provided in a machine room or the like, and an endless governor rope 9 is wound around the governor sheave 7 and a tensioner sheave 8 provided immediately below the governor sheave 7 at the bottom of the hoistway. .
A weight 10 is suspended from the tensioner sheave 8 around which the lower curved portion of the governor rope 9 is wound, and tension is applied to the governor rope 9.
Further, the base end of the swing arm 12 is pivotally supported by the bracket 11 fixed to the left car guide rail 5L, and the tip end of the swing arm 12 is connected to the rotation shaft of the tensioner sheave 8. Thus, the vertical movement of the tensioner sheave 8 and the weight 10 is allowed but the horizontal swing is restricted.

On the other hand, the tip 13 a of the safety link 13 provided at the upper part of the car frame 2 is connected to the middle of the governor rope 9.
The safety links 13 are connected to the upper ends of a pair of left and right lift rods 14L, 14R, respectively.
Furthermore, the lower ends of these lift rods 14L, 14R are connected to a pair of left and right emergency stop devices 15L, 15R provided at the lower part of the car frame 2.

At this time, if the descending speed of the car 1 exceeds a predetermined value, the governor 6 is actuated to lock the governor sheave 7 so as not to rotate.
Then, since the car 1 continues to descend while the movement of the governor rope 9 is stopped, the tip 13a of the safety link 13 is lifted, and the pair of left and right lift rods 14L, 14R are lifted.
Accordingly, the pair of left and right emergency stop devices 15L and 15R are operated to sandwich the pair of left and right car side guide rails 5L and 5R, so that the lowering of the car 1 can be stopped.

JP 2002-179361 A

By the way, since the kind and dimension of the governor 6 mentioned above differ according to the raising / lowering speed etc. of the passenger car 1, the diameter of the governor sheave 7 is also various.
Therefore, in the conventional governor tensioner device, it is necessary to change the diameter of the tensioner sheave 8 in accordance with the diameter of the governor sheave 7, and the types thereof are increased.
Furthermore, while the elevator is used for a long period of time, the governor rope 9 is stretched. Therefore, it is necessary to periodically cut the governor rope 9 and the maintenance and inspection work is complicated.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a governor tensioner device that solves the above-mentioned problems of the prior art, can be used in common with governor sheaves having different diameters, and can easily cope with the elongation of the governor rope. It is in.

The means described in claim 1 for solving the above problem is as follows.
A governor tensioner device for applying tension to the governor rope of the elevator,
First and second tensioner sheaves arranged side by side in a horizontal direction around which the lower curved portion of the governor rope is wound;
A first holding member for holding the first and second tensioner sheaves such that a horizontal interval thereof can be changed; and
Tension loading means for loading the governor rope with tension.

That is, in the elevator governor tensioner device according to claim 1, the horizontal spacing between the tensioner sheaves is changed by changing the horizontal mounting positions of the first and second tensioner sheaves with respect to the first holding member. Can be adjusted easily.
As a result, the horizontal interval between the first and second tensioner sheaves can be adjusted to the diameter of the governor sheave, so that the governor tensioner device can be used in common for governor sheaves having different diameters.

Further, the means described in claim 2 is provided in the governor tensioner device described in claim 1.
A third tensioner sheave disposed around the first and second tensioner sheaves, wherein the lower curved portion of the governor rope is wound;
A second holding member that holds the third tensioner sheave so as to freely change a vertical interval with respect to the first and second tensioner sheaves;
The lower curved portion of the governor rope is wound in the order of a first tensioner sheave, a third tensioner sheave, and a second tensioner sheave.

  That is, in the elevator governor tensioner device according to claim 2, it is possible to easily absorb the extension of the governor rope by increasing the vertical distance of the third tensioner sheave relative to the first and second tensioner sheaves. Therefore, it is not necessary to cut down the governor rope to shorten its overall length.

  When the second holding member is connected and integrated with the first holding member, the first and second second members are changed by changing the mounting position of the third tensioner sheave with respect to the second holding member. Since the relative position of the tensioner sheave and the third tensioner sheave in the vertical direction can be adjusted, the extension of the governor rope can be easily absorbed.

On the other hand, the means described in claim 3 is the governor tensioner device described in claim 2,
The second holding member and the third tensioner sheave are fixed so as not to move up and down with respect to an elevator hoistway,
The first holding member and the first and second tensioner sheaves are suspended and supported by the governor rope wound around the third tensioner sheave.
The second holding member and the third tensioner sheave can be fixedly supported on, for example, an elevator car side guide rail.

That is, in the elevator governor tensioner device according to claim 3, the first holding member and the second holding member are separated in the vertical direction, and the first holding member and the first and second tensioner sheaves are Then, the state is suspended from the third tensioner sheave by the governor rope.
The lower curved portion of the governor rope is wound in the order of the first tensioner sheave, the third tensioner sheave, and the second tensioner sheave.
Thereby, the vertical position of the 1st holding member currently supported by suspension can be changed freely by changing the fixed position of the 2nd holding member in the vertical direction.
Therefore, when the governor rope is stretched and the first holding member is displaced downward, the position of the first holding member supported by the suspension is moved by moving the fixing position of the second holding member upward. Since it can be easily lifted, the cutting operation of the governor rope can be made unnecessary.
Further, since the governor rope is wound in the order of the first tensioner sheave, the third tensioner sheave, and the second tensioner sheave, the first holding member is moved downward when the governor rope is elongated by the length L. The displacement distance is half that of the governor tensioner device according to the first aspect.
Therefore, the operation interval for changing the fixing position of the second holding member, which is required when the governor rope is stretched, can be extended to twice the interval for performing the cutting operation of the governor rope, which has been conventionally required. it can.

According to a fourth aspect of the present invention, in the elevator governor tensioner device according to any one of the first to third aspects, the tension load means is a weight connected to the first holding member. And
That is, by suspending a weight from the first holding member, tension can be applied to the governor rope via the first and second tensioner sheaves.
When the first holding member and the second holding member are connected and integrated with each other, the weight can be suspended from the second holding member.

On the other hand, the means described in claim 5 is the elevator governor tensioner device according to any one of claims 1 to 3, wherein the tension load means includes the first holding member and the elevator hoistway. It is a tension spring or a compression spring that is interposed between the first holding member and applies a downward spring force to the first holding member.
That is, instead of the weight, the first holding member is pushed downward by using a spring, whereby tension can be applied to the governor rope and elongation generated in the governor rope can be absorbed.

Further, the means described in claim 6 is the elevator governor tensioner device according to claim 2, wherein the tension load means is configured such that the third tensioner sheave is above the first and second tensioner sheaves. It is a tension spring or a compression spring interposed between the third tensioner sheave and the second holding member that applies a spring force so as to be spaced apart from each other.
In other words, the third tensioner sheave is pushed by the spring force and separated upward from the first and second tensioner sheaves, whereby tension can be applied to the governor rope wound around these tensioner sheaves. At the same time, the elongation generated in the governor rope can be absorbed.

  In addition, the means described in claim 7 adjusts the magnitude of the spring force by changing the total length of the tension spring or the compression spring with respect to the elevator governor tensioner device according to claim 5 or 6. A spring force adjusting mechanism is added.

That is, in the governor tensioner device according to the fifth aspect, one end of the tension spring or the compression spring can be connected to the first holding member, and the other end can be connected to, for example, the bottom surface of the hoistway. At this time, this spring force adjusting mechanism can be interposed between the other end of the spring and the bottom surface of the hoistway.
In the governor tensioner device according to the sixth aspect, one end of the tension spring or the compression spring can be connected to the rotating shaft of the third tensioner sheave, and the other end can be connected to the second holding member. At this time, this spring force adjusting mechanism can be interposed between the other end of the spring and the second holding member.
Therefore, by changing the overall length of the spring using this spring force adjusting mechanism, the magnitude of the tension applied to the governor rope can be freely adjusted, so that it is possible to easily cope with the extension of the governor rope.

  According to the present invention, it is possible to provide a governor tensioner device that can be commonly used for governor sheaves having different diameters and that can easily cope with the elongation of the governor rope.

Hereinafter, with reference to FIGS. 1-10, each embodiment of the governor device of the elevator which concerns on this invention is described in detail.
In the following description, the same reference numerals are used for the same parts including the above-described prior art, and the duplicate description is omitted.

First Embodiment First, a governor tensioner device according to a first embodiment corresponding to claims 1 and 4 will be described with reference to FIG.

The governor tensioner device 100 of the first embodiment shown in FIG. 1 is pivotally supported so that the base end of the swing arm 12 can swing freely on the car-side guide rail 5L via the bracket 11, as with the swing arm 12 shown in FIG. The swing arm 21 (first holding member) is provided.
A bracket 22 that supports the weight (tension load means) 10 is attached to the swing arm 21 by bolts and nuts 23 and a plurality of attachment holes for attaching the first and second tensioner sheaves 24 and 25. 21a and 21b are provided symmetrically in the longitudinal direction (left-right direction in the figure) with the bracket 22 as a reference.

First and second tensioner sheaves 24 and 25 are rotatably attached to one of the plurality of attachment holes 21a and 21b using bolts and nuts 26 and 26, respectively.
The governor rope 9 has its lower curved portion wound around these tensioner sheaves 24 and 25, and is tensioned by the weight of the weight 10 so as to move up and down between the governor rope 9 and the governor sheave 7 shown in FIG. It is maintained in a state extending straight in the direction.

At this time, in the state shown in FIG. 1A, the distance dimension between the left side portion and the right side portion of the governor rope 9 is W1 and is equal to the diameter of the governor sheave 7.
On the other hand, when the diameter of the governor sheave 7 is larger, the first and second tensioner sheaves 24, 25 are attached to the outer attachment holes 21a, 21b among the plurality of attachment holes 21a, 21b. As shown in 1 (c), the distance between the left side portion and the right side portion of the governor rope 9 can be expanded to W2.
Further, when the diameter of the governor sheave 7 is smaller, it can be coped with by attaching the first and second tensioner sheaves 24, 25 to the inner mounting holes 21a, 21b among the plurality of mounting holes 21a, 21b. .

That is, in the governor tensioner device 100 according to the first embodiment, by changing the horizontal mounting positions of the first and second tensioner sheaves 24 and 25 with respect to the swing arm 21, the tensioner sheaves 24 and 25 The horizontal interval can be easily adjusted.
As a result, the horizontal distance between the first and second tensioner sheaves 24 and 25 can be adjusted to the diameter of the governor sheave 7. Therefore, the governor tensioner device 100 can be commonly used for the governor sheaves 7 having different diameters. it can.

2nd Embodiment Next, with reference to FIG. 2 and FIG. 3, the governor tensioner apparatus of 2nd Embodiment corresponding to Claim 2 and Claim 4 is demonstrated.

The governor tensioner device 200 of the second embodiment shown in FIG. 2 is obtained by adding a third tensioner sheave 31 to the governor tensioner device 100 of the first embodiment shown in FIG.
Therefore, the bracket 21 that supports the weight 10 on the swing arm 21 is replaced with a new bracket (second holding member) 32 that extends long upward.
A plurality of mounting holes 32 a are provided in the upper part of the bracket 32 so as to be spaced apart in the vertical direction.
A third tensioner sheave 31 is rotatably attached to one of these attachment holes 32 a using a bolt nut 33.

In the state shown in FIG. 2, the distance between the left side portion and the right side portion of the governor rope 9 is W1 and is equal to the diameter of the governor sheave 7.
Further, the third tensioner sheave 31 is spaced upward with respect to the first and second tensioner sheaves 24 and 25 with an interval H1.

  On the other hand, when the diameter of the governor sheave 7 is larger, out of the plurality of mounting holes 21a and 21b penetrating the swinging arm 21, the outer mounting holes 21a and 21b are connected to the first and second mounting holes 21a and 21b. By attaching the tensioner sheaves 24 and 25, the distance between the left side portion and the right side portion of the governor rope 9 can be expanded to W2 as shown in FIG.

Further, when the governor rope 9 is stretched during long-term use of the elevator, the third tensioner sheave 31 is inserted into the upper mounting hole 32a among the plurality of mounting holes 32a penetrating the bracket 32. Install.
As a result, as shown in FIG. 3, the vertical distance between the third tensioner sheave 31 and the first and second tensioner sheaves 24, 25 is expanded to H2 (> H1), and the governor rope 9 is expanded. Can be absorbed.
Therefore, even if the governor rope 9 is stretched, the vertical position of the weight 10 can be prevented from being lowered too much without performing the cutting operation of the governor rope 9.

  That is, in the governor tensioner device 200 of the second embodiment, the governor rope 9 can be easily extended by changing the vertical distance of the third tensioner sheave 31 relative to the first and second tensioner sheaves 24 and 25. Therefore, it is not necessary to cut down the governor rope 9 to shorten its entire length.

Third Embodiment Next, a governor tensioner device according to a third embodiment corresponding to claim 3 and claim 4 will be described with reference to FIG.

The governor tensioner device 300 of the third embodiment shown in FIG. 4 is fixedly attached to the guide rail 5L shown in FIG. 11 with respect to the governor tensioner device 100 of the first embodiment shown in FIG. An impossible fixed arm (second holding member) 41 and a third tensioner sheave 31 that is rotatably supported by a bolt nut 42 on the fixed arm 41 are added.
Accordingly, the swing arm 21 in the governor tensioner device 100 according to the first embodiment is replaced with a bracket (first holding member) 43 having a short overall length and separated downward from the fixed arm 41.

That is, in the governor tensioner device 300 of the third embodiment, the bracket (first holding member) 43 and the fixed arm (second holding member) 41 are separated in the vertical direction.
The lower curved portion of the governor rope 9 is wound in the order of the first tensioner sheave 24, the third tensioner sheave 31, and the second tensioner sheave 25.
As a result, the bracket 43 and the first and second tensioner sheaves 24 and 25 are supported in a state of being suspended from the third tensioner sheave 31 by the governor rope 9.

In the governor tensioner device 300, the vertical position of the weight 10 can be freely changed by changing the vertical fixing position of the fixed arm 41 with respect to the guide rail 5L.
Therefore, when the governor rope 9 is stretched and the weight 10 is displaced downward, the weight 10 can be easily lifted by moving the fixing position of the fixed arm 41 upward. Without implementation, it is possible to prevent the vertical position of the weight 10 from being excessively lowered.
Furthermore, the distance that the weight 10 is displaced downward when the length L of the governor rope 9 is extended is half that of the governor tensioner device 100 of the first embodiment.
Therefore, the operation interval for changing the fixing position of the fixed arm 41 that is required when the governor rope 9 is extended can be extended to twice the interval for performing the cutting operation of the governor rope 9 that was conventionally required. it can.

Fourth Embodiment Next, a governor tensioner device according to a fourth embodiment corresponding to claim 5 will be described with reference to FIG.

The governor tensioner device 400 of the fourth embodiment shown in FIG. 5 is obtained by replacing the weight 10 as the tension load means in the governor tensioner device 100 of the first embodiment shown in FIG. ing.
Accordingly, the bracket 22 in the governor tensioner device 100 of the first embodiment is replaced with a bracket 52 having a mounting portion 52a at the lower end.
The tension coil spring 51 is interposed between the lower end of the bracket 52 and the bottom surface 53 of the hoistway, and applies a downward spring force to the first holding member 21 so as to apply tension to the governor rope 9. It has become.

  In the governor tensioner device 400 of the fourth embodiment, the tension coil spring 51 is used. However, a downward spring force is applied to the first holding member 21 by using a compression spring, and tension is applied to the governor rope 9. It is also possible to load.

Next, a governor tensioner device 450 according to a modification corresponding to claim 7 will be described with reference to FIG. 6. A spring force adjustment mechanism is interposed between the lower end of the tension coil spring 51 and the bottom surface 53 of the hoistway. Yes.
This spring force adjusting mechanism adjusts the vertical position of the bracket 54 by screwing the bracket 54 attached to the lower end of the tension coil spring 51, the bolt 55 planted on the bottom surface of the hoistway, and the bolt 55. And a nut 56.

Accordingly, when the nut 56 is tightened and the bracket 54 is displaced downward, the entire length of the tension coil spring 51 is extended, so that the downward spring force acting on the first holding member 21 can be increased.
Therefore, when the governor rope 9 is stretched and the first holding member 21 is displaced downward and the tension of the governor rope 9 is lowered, the downward spring force is increased by tightening the nut 56, and the governor rope 9 The tension of the governor rope 9 can be set to an appropriate value while absorbing the elongation.

Fifth Embodiment Next, a governor tensioner device according to a fifth embodiment corresponding to claim 5 will be described with reference to FIG.

In the governor tensioner device 500 of the fifth embodiment shown in FIG. 7, the weight 10 as the tension load means in the governor tensioner device 200 of the second embodiment shown in FIGS. 2 and 3 is replaced with a tension coil spring 61. It has become a thing.
Accordingly, the bracket 32 in the governor tensioner device 200 of the second embodiment is replaced with a bracket 62 having a mounting portion 62a at the lower end thereof.
The tension coil spring 61 is interposed between the lower end of the bracket 62 and the bottom surface 53 of the hoistway, and applies tension to the governor rope 9 by applying a downward spring force to the first holding member 21. It is like that.

In the governor tensioner device 500 of the fifth embodiment, the tension coil spring 61 is used. However, a downward spring force is applied to the first holding member 21 by using a compression spring, and tension is applied to the governor rope 9. It is also possible to load.
Furthermore, a spring force adjusting mechanism shown in FIG. 6 can be interposed between the tension coil spring 61 and the bottom surface 53 of the hoistway.

Sixth Embodiment Next, a governor tensioner device according to a sixth embodiment corresponding to claim 5 will be described with reference to FIG.

The governor tensioner device 600 of the sixth embodiment shown in FIG. 8 is obtained by replacing the weight 10 as the tension load means in the governor tensioner device 300 of the third embodiment shown in FIG. It has become.
Accordingly, the bracket 22 in the governor tensioner device 300 of the third embodiment is replaced with a bracket 72 having a mounting portion 72a at the lower end thereof.
The tension spring 71 is interposed between the lower end of the bracket 72 and the bottom surface 53 of the hoistway, and applies a downward spring force to the first holding member 43 so as to apply a tension to the governor rope 9. It has become.

In the governor tensioner device 600 of the sixth embodiment, the tension spring 71 is used. However, a downward spring force is applied to the first holding member 43 by using a compression spring, and tension is applied to the governor rope 9. It is also possible to do.
Furthermore, a spring force adjusting mechanism shown in FIG. 6 can be interposed between the tension spring 71 and the bottom surface 53 of the hoistway.

7th Embodiment Next, with reference to FIG. 9, the governor tensioner apparatus of 7th Embodiment is demonstrated.

The governor tensioner device 700 of the seventh embodiment shown in FIG. 9 is obtained by replacing the weight 10 as the tension load means in the governor tensioner device 200 of the second embodiment shown in FIGS. 2 and 3 with a compression spring 81. It has become.
Accordingly, the bracket 32 in the governor tensioner device 200 of the second embodiment is replaced with a bracket 82 having a long hole 82a at its upper end.
Further, the support shaft 31 a that rotatably supports the third tensioner sheave 31 is inserted into the elongated hole 82 a and a first spring receiving member 83 that receives the spring force of the compression spring 81 is attached. .
Further, a second spring receiving member 84 is provided at the central portion of the bracket 82 so as to receive the spring force of the compression spring 81.

That is, in the governor tensioner device 700 of the seventh embodiment, the third tensioner sheave 31 is moved by the spring force of the compression spring 81 interposed between the third tensioner sheave 31 and the second holding member 82. Since it is biased upward, tension can be applied to the governor rope 9.
Further, even if the governor rope 9 is stretched while the elevator is used for a long period of time, this stretch can be absorbed by the spring force of the compression spring 81, so that it is not necessary to cut down the governor rope 9 and shorten its overall length. It can be.

Modified Example Next, a modified example of the governor tensioner device 700 according to the seventh embodiment will be described with reference to FIG.
The governor tensioner device 750 of the modified example shown in FIG. 10 corresponds to claim 7, and the overall length of the compression spring 81 is changed to the governor tensioner device 700 of the seventh embodiment shown in FIG. A spring force adjusting mechanism for adjusting the spring force is added.
Along with this, a bolt 86 is erected on a support portion 85 fixed below the center of the bracket 82, and a double lock nut 87 that is screwed into the bolt 86 supports the third spring receiving member 88. is doing.

Accordingly, when the double lock nut 86 is moved upward and the second spring receiving member 87 is lifted, the overall length of the compression spring 81 is shortened, so that the upward spring force acting on the third tensioner sheave 31 is increased. Can be made.
Accordingly, when the governor rope 9 is stretched and the third tensioner sheave 31 is displaced upward and the tension of the governor rope 9 is lowered, the double lock nut 86 is moved upward to move the third tensioner sheave 31 to the third tensioner sheave 31. The acting upward spring force can be increased, and the tension of the governor rope 9 can be restored.

As mentioned above, although each embodiment of the governor tensioner apparatus of the elevator which concerns on this invention was described in detail, it cannot be overemphasized that this invention is not limited by embodiment mentioned above and a various change is possible.
For example, in the above-described seventh embodiment, the third tensioner sheave 31 is urged upward using the compression coil spring 81, but the third tensioner sheave 31 is attached upward using the tension coil spring. It can also help.

The (a) front view which shows the governor tensioner apparatus of 1st Embodiment, (b) Side view, (c) The front view which shows the case where the horizontal direction space | interval of the 1st and 2nd tensioner sheave is expanded. The front view which shows the governor tensioner apparatus of 2nd Embodiment. The front view which shows the state which expanded the horizontal direction space | interval of the 1st and 2nd tensioner sheave shown in FIG. 2, and moved the 3rd tensioner sheave upward. The front view which shows the governor tensioner apparatus of 3rd Embodiment. The front view which shows the governor tensioner apparatus of 4th Embodiment. The front view which shows the governor tensioner apparatus of the modification of 4th Embodiment. The front view which shows the governor tensioner apparatus of 5th Embodiment. The front view which shows the governor tensioner apparatus of 6th Embodiment. The front view which shows the governor tensioner apparatus of 7th Embodiment. The front view which shows the governor tensioner apparatus of the modification of 7th Embodiment. The front view which shows typically the structure of the governor of an elevator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car 2 Car frame 6 Governor 7 Governor sheave 8 Tensioner sheave 9 Governor rope 10 Weight 12 Swing arm 13 Safety link 14 Lift rod 15 Emergency stop device 21 Swing arm 21a, 21b Mounting hole 24 First tensioner sheave 25 Second tension Tensioner sheave 31 Third tensioner sheave 32a Mounting hole 41 Fixed arm 51 Tension coil spring 53 Bottom surface of hoistway 54, 55, 56 Spring force adjustment mechanism 61 Tension coil spring 71 Tension coil spring 81 Compression coil spring 82a Long hole
83 1st spring receiving member 84 Support part 87 2nd spring receiving member 100 The governor tensioner apparatus 200 of 1st Embodiment The governor tensioner apparatus 300 of 2nd Embodiment The governor tensioner apparatus 400 of 3rd Embodiment of 4th Embodiment Governor Tensioner Device 450 Governor Tensioner Device 500 of Modified Example Governor Tensioner Device 600 of Fifth Embodiment Governor Tensioner Device 700 of Sixth Embodiment Governor Tensioner Device 750 of Seventh Embodiment Governor Tensioner Device of Modification Example

Claims (7)

A governor tensioner device that applies tension to the governor rope of the elevator,
First and second tensioner sheaves wound around the lower curved portion of the governor rope and juxtaposed in the horizontal direction;
A first holding member for holding the first and second tensioner sheaves such that a horizontal interval thereof can be changed; and
A governor tension device for an elevator, comprising tension load means for applying tension to the governor rope. A third tensioner sheave disposed above the first and second tensioner sheaves so as to be displaced upward and wound around a lower curved portion of the governor rope;
A second holding member that holds the third tensioner sheave so as to freely change a vertical interval with respect to the first and second tensioner sheaves;
The governor tension device for an elevator according to claim 1, wherein the lower curved portion of the governor rope is wound in the order of the first tensioner sheave, the third tensioner sheave, and the second tensioner sheave. The second holding member and the third tensioner sheave are fixed so as not to move up and down with respect to an elevator hoistway,
The said 1st holding member and the said 1st and 2nd tensioner sheave are suspended and supported by the said governor rope wound by the said 3rd tensioner sheave. Elevator governor tension device.   The governor tensioner device for an elevator according to any one of claims 1 to 3, wherein the tension load means is a weight connected to the first holding member.   The tension load means is a tension spring or a compression spring that is interposed between the first holding member and an elevator hoistway and applies a downward spring force to the first holding member. The elevator governor tensioner device according to any one of claims 1 to 3.   The tension load means applies a spring force so that the third tensioner sheave is vertically separated from the first and second tensioner sheaves, and the third tensioner sheave and the second holding member. The governor tensioner device for an elevator according to claim 2, wherein the tensioner device is a tension spring or a compression spring interposed between the member and the member.   The elevator governor tensioner device according to claim 5 or 6, further comprising a spring force adjusting mechanism that adjusts the magnitude of the spring force by changing a total length of the tension spring or the compression spring.

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